CVE-2026-75604— Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
Quick assessment
Affected
vercel next.js
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Next.js 是一个用于构建全栈 Web 应用的 React 框架。在 13.4.0 至 15.5.24 和 16.3.3 版本中，部署在 Windows 服务器上的 Next.js 应用程序（无论使用 Pages Router 还是 App Router，且未启用缓存组件时），在构建增量缓存路径之前，未能一致地对路由段中的反斜杠进行转义。具体来说，在 和 中，远程请求可以注入编码后的 Windows 路径分隔符（如 ），导致路径穿越，从而越出预期的缓存根目录，暴露私有构建数据，包括服务器引用清单（server-
In-the-Wild Activity Observed
github_trending · low
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I. Basic Information for CVE-2026-75604
Vulnerability Information
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Vulnerability Title
Next.js: Unauthenticated Remote Code Execution on windows-hosted servers
Source: CVE Program / CVE List V5
Vulnerability Description
Next.js is a React framework for building full-stack web applications. From 13.4.0 until 15.5.24 and 16.3.3, Next.js applications using Pages Router or App Router without Cache Components on Windows-hosted servers do not consistently escape backslashes in route segments before constructing incremental-cache paths. In packages/next/src/shared/lib/router/utils/escape-path-delimiters.ts and packages/next/src/server/lib/incremental-cache/file-system-cache.ts, a remote request can supply encoded Windows path separators that traverse outside the intended cache root and expose private build data, including the server-reference-manifest encryption key. Disclosure of that key can enable remote code execution in the affected application. This issue is fixed in versions 15.5.24 and 16.3.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-75604
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-75604 (5)
-
https://github.com/vercel/next.js/releases/tag/v16.3.3 x_refsource_MISC
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https://github.com/vercel/next.js/releases/tag/v15.5.24 x_refsource_MISC
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https://github.com/vercel/next.js/security/advisories/GHSA-p293-qw3h-jr36 x_refsource_CONFIRM
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